1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323 | #include <gate/gatemain.h>
#include <gate/results.h>
#include <gate/graphics/framebuffers.h>
#include <gate/graphics/gifimages.h>
#include <gate/files.h>
#include <gate/console.h>
typedef struct player_class
{
unsigned width;
unsigned height;
gate_enumint_t animation_flags;
gate_gifanimation_reader_t gif_reader;
gate_framebuffer_t* screen;
} player_t;
static void player_destroy(player_t* player)
{
if (!player) return;
if (player->screen)
{
gate_object_release(player->screen);
player->screen = NULL;
}
if (player->gif_reader)
{
gate_gifanimation_reader_destroy(player->gif_reader);
player->gif_reader = NULL;
}
}
static gate_result_t player_load_file(player_t* player, gate_string_t const* file)
{
gate_result_t result;
gate_filestream_t* filestream = NULL;
do
{
if (player->gif_reader)
{
gate_gifanimation_reader_destroy(player->gif_reader);
player->gif_reader = NULL;
}
result = gate_file_openstream(file, GATE_STREAM_OPEN_READ, &filestream);
GATE_BREAK_IF_FAILED(result);
result = gate_gifanimation_reader_create(&player->gif_reader);
GATE_BREAK_IF_FAILED(result);
result = gate_gifanimation_reader_load(player->gif_reader, (gate_stream_t*)filestream,
&player->width, &player->height, &player->animation_flags);
} while (0);
if (filestream)
{
gate_object_release(filestream);
}
return result;
}
static gate_result_t player_create(player_t* player, gate_string_t const* file)
{
gate_result_t result = GATE_RESULT_FAILED;
gate_mem_clear(player, sizeof(player_t));
result = player_load_file(player, file);
if (GATE_FAILED(result))
{
player_destroy(player);
}
return result;
}
static gate_result_t player_open_screen(player_t* player)
{
gate_framebuffer_info_t screen_info = GATE_INIT_EMPTY;
gate_framebuffer_t* ptr_screen = NULL;
gate_result_t result = gate_framebuffer_find_display(player->width, player->height, &screen_info);
GATE_RETURN_IF_FAILED(result);
result = gate_framebuffer_open_display(&screen_info, &ptr_screen);
if (GATE_SUCCEEDED(result))
{
if (player->screen)
{
gate_object_release(player->screen);
}
player->screen = ptr_screen;
}
return result;
}
static gate_result_t player_show_next_frame(player_t* player, gate_uint32_t* ptr_showtime_ms)
{
gate_result_t result;
gate_rasterimage_t frame = GATE_INIT_EMPTY;
unsigned x = 0;
unsigned y = 0;
do
{
result = gate_gifanimation_reader_get_frame(player->gif_reader, &frame, &x, &y, ptr_showtime_ms);
GATE_BREAK_IF_FAILED(result);
result = gate_framebuffer_set_image(player->screen, &frame, x, y);
GATE_BREAK_IF_FAILED(result);
result = gate_framebuffer_update(player->screen);
} while (0);
gate_rasterimage_release(&frame);
return result;
}
typedef enum player_event_enum
{
player_event_next_frame,
player_event_end_reached,
player_event_user_cancel,
player_event_user_repeat,
player_event_user_skip
} player_event_t;
static gate_result_t player_await_any_key_or_quit(player_t* player)
{
gate_result_t result = GATE_RESULT_OK;
gate_framebuffer_event_t fb_event = GATE_INIT_EMPTY;
do
{
result = gate_framebuffer_await_event(player->screen, 1000, &fb_event);
if (result == GATE_RESULT_TIMEOUT)
{
result = GATE_RESULT_OK;
continue;
}
if (GATE_FAILED(result))
{
break;
}
switch (fb_event.event_type)
{
case GATE_FRAMEBUFFER_EVENT_CANCEL:
case GATE_FRAMEBUFFER_EVENT_QUIT:
case GATE_FRAMEBUFFER_EVENT_KEY_DOWN:
return GATE_RESULT_OK;
default:
continue;
}
} while (GATE_SUCCEEDED(result));
return result;
}
static gate_result_t player_await_next_frame(player_t* player, gate_uint32_t showtime_ms, player_event_t* ptr_event)
{
gate_result_t result;
gate_framebuffer_event_t fb_event = GATE_INIT_EMPTY;
gate_timecounter_t timeout = 0;
gate_timecounter_t now = 0;
result = gate_timecounter_now(&now);<--- Variable 'result' is reassigned a value before the old one has been used.
timeout = gate_timecounter_add(now, (gate_int64_t)showtime_ms * 1000);
do
{
showtime_ms = (gate_uint32_t)gate_timecounter_diff(timeout, now) / 1000;
result = gate_framebuffer_await_event(player->screen, showtime_ms, &fb_event);<--- Variable 'result' is reassigned a value before the old one has been used.
if (GATE_SUCCEEDED(result))
{
switch (fb_event.event_type)
{
case GATE_FRAMEBUFFER_EVENT_CANCEL:
case GATE_FRAMEBUFFER_EVENT_QUIT:
*ptr_event = player_event_user_cancel;
return GATE_RESULT_OK;
case GATE_FRAMEBUFFER_EVENT_KEY_DOWN:
{
if (fb_event.event_data.key.key_code == GATE_KBD_KEY_ESCAPE)
{
*ptr_event = player_event_user_cancel;
return GATE_RESULT_OK;
}
break;
}
case GATE_FRAMEBUFFER_EVENT_IDLE:
case GATE_FRAMEBUFFER_EVENT_NONE:
case GATE_FRAMEBUFFER_EVENT_KEY_UP:
case GATE_FRAMEBUFFER_EVENT_KEY_PRESS:
case GATE_FRAMEBUFFER_EVENT_POINTER_BUTTON_DOWN:
case GATE_FRAMEBUFFER_EVENT_POINTER_BUTTON_UP:
case GATE_FRAMEBUFFER_EVENT_POINTER_MOVE:
default:
break;
}
}
else if (GATE_RESULT_TIMEOUT == result)
{
*ptr_event = player_event_next_frame;
result = GATE_RESULT_OK;<--- Variable 'result' is reassigned a value before the old one has been used.
}
result = gate_timecounter_now(&now);<--- Variable 'result' is reassigned a value before the old one has been used.
} while (GATE_SUCCEEDED(result) && (now < timeout));
return result;
}
static gate_result_t player_play(player_t* player)
{
gate_result_t result = GATE_RESULT_OK;
gate_uint32_t showtime_ms = 0;
player_event_t player_event;
while (GATE_SUCCEEDED(result))
{
result = player_show_next_frame(player, &showtime_ms);
GATE_CONTINUE_IF_FAILED(result);
result = player_await_next_frame(player, showtime_ms, &player_event);
if (player_event != player_event_next_frame)
{
break;
}
}
return result;
}
gate_result_t run_player(gate_string_t const* animation_file, gate_uint32_t loop_count)
{
gate_result_t result;
player_t player = GATE_INIT_EMPTY;
gate_console_t* con = gate_console();
result = player_create(&player, animation_file);
if (GATE_FAILED(result))
{
gate_console_println_err(con, "Failed to create player instance");
return result;
}
do
{
result = player_open_screen(&player);
if (GATE_FAILED(result))
{
gate_console_println_err(con, "Failed to open screen");
break;
}
GATE_BREAK_IF_FAILED(result);
result = player_play(&player);
--loop_count;
while ((loop_count > 0) && (result == GATE_RESULT_ENDOFSTREAM))
{
result = player_load_file(&player, animation_file);
GATE_BREAK_IF_FAILED(result);
result = player_play(&player);
--loop_count;
}
player_await_any_key_or_quit(&player);
//player_load_file
} while (0);
player_destroy(&player);
return result;
}
int gate_main(char const* program, char const* const* arguments, gate_size_t argcount, gate_uintptr_t apphandle)
{
gate_result_t result = GATE_RESULT_OK;
gate_console_t* con = gate_console();
GATE_UNUSED_ARG(apphandle);
if (argcount < 1)
{
gate_console_println_err(con, "Missing argument.");
gate_console_println_err(con, "Usage:");
gate_console_print_err(con, program);
gate_console_println_err(con, " path/to/animation.gif");
result = GATE_RESULT_FAILED;
}
else
{
gate_string_t animation_file = GATE_STRING_INIT_EMPTY;
gate_int64_t loop_count_param = 1;
gate_uint32_t loop_count = 1;
if (argcount >= 2)
{
if (gate_str_parse_int64(arguments[1], gate_str_length(arguments[1]), &loop_count_param) > 0)
{
if (loop_count_param <= 0)
{
loop_count = 0xffffffff;
}
else
{
loop_count = (gate_uint32_t)loop_count_param;
}
}
}
gate_string_create_static(&animation_file, arguments[0]);
result = run_player(&animation_file, loop_count);
if (result == GATE_RESULT_ENDOFSTREAM)
{
result = GATE_RESULT_OK;
}
}
return GATE_RESULT_TO_EXITCODE(result);
}
|